Chapter 28.2 Flashcards
a narrow band of fast-moving, high altitude air
jet stream
the apparent deflection of an object due to Earth’s rotation
Coriolis effect
a large volume of air with uniform moisture and temperature throughout
air mass
air masses interact zones called
weather fronts
is there only one jet stream in the world
no there are 4 total jet streams
how many pressure systems are there
2
what is the low pressure system also known as
A Low (L)
which direction does a low pressure system flow
counterclockwise
what are some results that a low pressure system will cause
air rises causing clouds to form and creates percipitation
what is a high pressure system also known as
A High (H)
which direction does a high pressure system flow
clockwise
what does a high pressure system cause
causes the air to sink, which results in clear skies
what are the 4 weather fronts
warm, cold, occluded, and stationary fronts
what causes a cold fronts
when cold air forces warm air upward in a fast and chaotic manner which creates cumulus clouds
what is a cold front represented by on the weather forecast
blue triangles
how are warm fronts caused
warm air rises gently above cold air which forms stratus-type clouds or fog
what is the warm fronts represented by on the news
red triangles
how are stationary fronts formed
when cold and warm air masses meet and neither front advances
can last for days
produce clouds
how are stationary fronts represented on the news
semicircles and triangles alternating on top
how are occluded fronts formed
a fast moving cold front overtakes a slow warm front
how are occluded front represented on the news
it is purple and your triangle and semicircle will be alternating on top
